Lennox G71MPP, Unit Information

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TABLE 8
G71MPP−60C−110 BLOWER PERFORMANCE (less filter) −− Side Return Air with Optional RAB Return Air Base
0 through 0.80 in. w.g. External Static Pressure Range
HEATING BLOWER PERFORMANCE
Heating Adjust CFM Selections
Heating Input Range and Blower Volume − CFM
40% 50% 60% 70% 80% 90% 100%
Increase (+15%) Heat CFM 865 1020 1175 1330 1485 1635 1785
Increase (+7.5%) Heat CFM 805 950 1095 1240 1385 1535 1680
Default Heat CFM 760 895 1030 1165 1300 1435 1570
Decrease (–7.5% ) Heat CFM 710 835 960 1090 1210 1335 1460
Decrease (–15% ) Heat CFM 645 765 880 1000 1110 1220 1335
COOLING BLOWER PERFORMANCE
Cooling Adjust CFM
Selections
Blower Speed Selections
First Stage Cool Speed − cfm Second Stage Cool Speed − cfm
Low
Medium−
Low
Medium
High
High
(Default)
Low
Medium−
Low
Medium
High
High
(Default)
Increase (+10%) Cool CFM 1085 1155 1310 1475 1555 1685 1895 2130
Default Cool CFM 955 1050 1185 1335 1415 1540 1735 1930
Decrease (–10%) Cool CFM 850 920 1070 1195 1245 1350 1545 1725
The effect of static pressure is included in air volumes shown.
Lennox Harmony III
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Zone Control Applications − Minimum blower speed is 450 cfm.
The following control board configurations are available. See Installation Instructions for details and DIP switch settings.
Heat Mode (Heating Blower Performance Table):
With a single−stage thermostat, furnace will operate at three, staged rates (40/70/100%) with a time delay between each stage (values in grey−shaded
columns).
With two−stage thermostat there are two modes available.
Traditional two−stage mode − W1 demand results in 70% firing rate. W2 results in 100% firing rate. No delay between stages. (values shown in 70%
and 100% grey−shaded columns only).
Variable Rate Capacity Mode − furnace automatically adjusts firing rate based on first− and second−stage cycle times. (all columns)
Cool Mode (Cooling Blower Performance table) :
First stage COOL (two−stage air conditioning units only) is approximately 70 % of the same second stage COOL speed position.
Continuous Fan speeds are approximately 28%, 38%, 70% and 100% (DIP switch selectable) of the same second−stage COOL speed position
minimum 450 cfm.
G71MPP−60C−110 BLOWER MOTOR WATTS − COOLING − Side Return Air with Optional RAB Return Air Base
Blower Speed
Options
Motor Watts @ Various External Static Pressures − in. wg.
First Stage Second Stage
0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
Increase (+10%) Cool CFM
Low 105 125 150 175 200 220 245 265 290 250 285 320 360 395 435 470 500 535
Medium−Low 130 150 175 200 220 240 270 295 320 335 365 405 445 480 515 550 590 630
Medium−High 165 190 220 250 275 305 335 370 400 470 505 545 585 630 670 710 755 800
High 205 240 285 330 360 390 420 450 485 655 695 745 790 840 885 925 965 1005
Default Cool CFM
Low 75 90 115 135 160 185 205 225 250 190 220 255 290 325 360 395 430 460
Medium−Low 100 120 145 165 185 205 230 255 280 250 285 325 360 390 420 455 485 520
Medium−High 135 155 175 200 230 260 280 305 330 355 395 435 475 510 545 580 620 660
High 170 195 225 255 290 320 350 375 405 475 515 565 610 655 705 745 785 825
Decrease (–10%) Cool CFM
Low 55 70 90 110 135 155 175 195 220 150 170 200 225 255 285 315 340 370
Medium−Low 65 80 105 130 150 170 195 215 240 165 195 230 265 300 330 360 390 420
Medium−High 100 125 150 180 200 220 240 260 280 240 280 320 360 400 435 470 505 540
High 140 160 180 200 230 260 285 305 330 350 385 420 455 500 540 575 610 645